Grounding structure and electrical connector

Abstract

The utility model relates to a kind of grounding structure and electric connector.The grounding structure includes ground sheet, with first side and second side, first hole is provided on the ground sheet, the first hole is through the second side of the ground sheet;And conductive column, its first end is connected in first hole, second end is used to be connected with ground object.The electric connector includes first lead frame, with first side and second side;First terminal assembly, with signal terminal and ground terminal, the signal terminal and ground terminal are all set in the second side of the first lead frame;And first grounding structure, the first grounding structure is located in the first side of the first lead frame;The first lead frame is provided with the second hole opposite with the first hole of the first grounding structure, the second hole is communicated with the ground terminal;The conductive column is connected in the first hole and second hole, the conductive column is connected with the ground terminal as ground object.

Description

Technical Field

[0001] This utility model relates to the field of electrical structure technology, and in particular to a grounding structure and an electrical connector. Background Technology

[0002] Currently, with servers and other devices demanding increasingly higher signal transmission speeds, the high-frequency performance of connectors has become a primary evaluation criterion. Therefore, addressing crosstalk between high-frequency signals and improving the crosstalk immunity of electrical connectors has become increasingly important. Electrical connectors typically employ grounding structures to reduce signal crosstalk, thereby enhancing their crosstalk immunity and ensuring signal transmission stability and accuracy.

[0003] Chinese patent application number 202410611162.2 discloses a grounding structure employing a waveform grounding plate design. The waveform grounding plate has peaks and troughs; the peaks are used to contact the corresponding grounding terminals, and the troughs are used to contact the isolation plate. However, this design has several problems: First, the waveform grounding plate has multiple bends, increasing manufacturing complexity. Second, since all grounding terminals of the electrical connector are located on a single plane, the waveform grounding plate requires extremely high flatness; otherwise, poor contact with the grounding terminals can easily occur, affecting grounding performance and thus reducing crosstalk immunity. Finally, the waveform grounding plate is not suitable for non-flat grounding terminals and is difficult to apply to bent or folded grounding terminals. Furthermore, the aforementioned connectors generally employ a technical solution of setting a first terminal group and a second terminal group on the upper and lower sides of a printed circuit board (i.e., the electrical connection plug in the prior art), grounding through the printed circuit board; this solution is costly. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a grounding structure and an electrical connector.

[0005] To solve the above-mentioned technical problems, the present invention provides a grounding structure, comprising:

[0006] A grounding plate having a first side surface and a second side surface, wherein a first hole is provided on the grounding plate, the first hole penetrating through the second side surface of the grounding plate; and

[0007] A conductive post, with its first end connected to the first hole and its second end used to connect to a grounded object.

[0008] Furthermore, the first hole also penetrates the first side of the grounding plate to form a first through hole;

[0009] The first side and the second side are opposite to each other.

[0010] Furthermore, there are several grounding objects; the grounding plate is provided with several sets of first holes adapted to the grounding objects; among the several sets of first holes, at least one set of first holes includes multiple first holes, the multiple first holes are distributed along the length direction of the grounding object and are all aligned with the grounding object, so that the conductive post in each first hole can be connected to the grounding object.

[0011] Furthermore, the conductive post is configured as a conductive adhesive post, the outer peripheral surface of the conductive adhesive post is bonded to the inner peripheral surface of the first hole, and the second end of the conductive adhesive post extends out of the first hole and is bonded to the grounding object.

[0012] Furthermore, the conductive adhesive column is configured as a conductive adhesive column having gold, silver, copper and / or graphite conductive materials.

[0013] Furthermore, the first end face of the conductive post is recessed into the first through hole; or, the first end face of the conductive post is flush with the first side of the grounding plate away from the grounding object.

[0014] Furthermore, the grounding plate is provided with claws; claws are provided on both ends of the grounding plate; the first end of the claw is connected to the grounding plate, and the second end extends towards the grounding object.

[0015] Furthermore, a claw is provided on the grounding plate at a position corresponding to at least one of the first through holes. The claw is integrally stamped when the first through hole is stamped. The claw is stamped from the first side of the grounding plate to the second side. The claw extends in the direction of the grounding object and can extend into the conductive post.

[0016] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an electrical connector, including the grounding structure described above.

[0017] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide an electrical connector, comprising:

[0018] The first lead frame has a first side and a second side;

[0019] A first terminal assembly includes a signal terminal and a ground terminal, both of which are disposed on a second side of the first lead frame; and

[0020] A first grounding structure, configured as the grounding structure of any one of claims 1 to 8, wherein the first grounding structure is located on a first side of the first lead frame;

[0021] The first lead frame is provided with a second hole that is directly opposite to the first hole of the first grounding structure. The second hole is connected to the grounding terminal. The conductive post is connected to the first hole and the second hole. The conductive post is also connected to the grounding terminal, which is the grounding object, through the second hole.

[0022] Based on the above embodiments, the grounding structure and electrical connector of this utility model have the following beneficial effects: (i) The grounding structure is configured as a grounding plate with a first hole, and a conductive post is set in the first hole to connect the grounding plate and the grounding object, ensuring the conductive connection performance between the grounding plate and the grounding object. (ii) The connection between the grounding plate and the grounding object is realized through the conductive post, so that the first and second sides of the grounding plate are made into planes, improving the overall strength of the grounding plate. Compared with the waveform grounding plate in the prior art, the flat grounding plate in this solution is more convenient to install and cooperate with other components, reduces the space in the height direction, makes the overall structure layout more compact, and can save raw materials, reduce costs, reduce the processing difficulty of the grounding plate, and eliminate the need to consider the problem of poor contact with the grounding object caused by the flatness deviation of the grounding plate. (iii) Through the cooperation structure of the conductive post and the first hole, the grounding structure can be used for grounding objects of more shapes. It is only necessary to set the corresponding first hole and the corresponding number or size of conductive posts according to the distribution direction of the grounding object, thereby improving the applicability and versatility of the grounding structure. (iv) The grounding plate is provided with a claw structure, which can further increase the bonding strength between the grounding plate and other components. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of an embodiment of the grounding structure of this utility model.

[0025] Figure 2 yes Figure 1 Exploded view.

[0026] Figure 3 yes Figure 1 Sectional view of AA.

[0027] Figure 4 This is a structural schematic diagram of an embodiment of the electrical connector of this utility model.

[0028] Figure 5 yes Figure 4 A cross-sectional view of BB.

[0029] Figure 6 yes Figure 4 Exploded view.

[0030] Figure 7 yes Figure 4 A schematic diagram of the structure of the first terminal assembly, with some of the first and second side terminals hidden in the diagram.

[0031] Figure 8 yes Figure 7 Side view of the grounding terminal.

[0032] Figure 9 yes Figure 4 A structural schematic diagram of the first lead frame from the first perspective.

[0033] Figure 10 yes Figure 9 A magnified schematic diagram of part C in the middle.

[0034] Figure 10a yes Figure 10 A schematic diagram showing the connection between the bending section and the joint section of the grounding terminal in part C.

[0035] Figure 11 yes Figure 4 A structural schematic diagram of the first lead frame from a second perspective.

[0036] Figure 12 This is a schematic diagram of the engagement of the first component and the second component in one embodiment of the electrical connector of this utility model.

[0037] Figure 13 yes Figure 4 A schematic diagram of the structure of the main carrier.

[0038] The diagrams in the instruction manual are labeled as follows:

[0039] Grounding structure 100; grounding plate 110; first side 111; second side 112; first hole 113; first through hole 113a; positioning hole 114; conductive post 120; conductive adhesive post 120a; first gap J1; claw 130;

[0040] First component A; First grounding structure 100'; First lead frame 200; First side 201; Second side 202; Second hole 203; Second through hole 203a; Pressing hole 204; Side rib 210; Middle rib 220; Receiving groove 230; Signal receiving groove 230a; Grounding receiving groove 230b; First contoured surface 231; Second contoured surface 232; Third contoured surface 233; Sharp corner 234; Positioning protrusion 240; Recess 250; Stop 260; Positioning post 271; Positioning hole 272;

[0041] First terminal assembly 300; signal terminal 30a; grounding terminal 30b; second gap J2; third gap J3; intermediate terminal 310; first side terminal 320; second side terminal 330; first straight section 301; inclined section 302; second straight section 303; bending section 304; first bending portion 3041; second bending portion 3042; connecting section 305;

[0042] Second component B; Second grounding structure 100”; Second lead frame 200”; Second terminal assembly 300”;

[0043] Embedded space S1; concave space S2; concave-convex mating surface S21;

[0044] Main carrier 400; first opening 401; second opening 402; first covering part 410; second covering part 420; mating groove 421; clearance groove 422; third covering part 430; fourth covering part 440; shielding parts 431, 441; connecting parts 432, 442; fifth covering part 450; guide part 45a; first part 451; second part 452; signal covering grooves 451a, 452a; grounding covering grooves 451b, 452b; embedded groove 453. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The following disclosure provides various embodiments or examples of different features for implementing this utility model. Specific examples of components and arrangements will be described below to simplify the utility model. Of course, these are merely examples and are not intended to limit the utility model. For example, in the following description, forming a first component above or on a second component may include embodiments where the first and second components are in direct contact, or embodiments where other components may be formed between the first and second components such that the first and second components are not in direct contact. Additionally, reference numerals and / or characters may be repeated in various instances of the utility model. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations.

[0047] Furthermore, spatial relation terms such as "below," "under," "below," "above," and "above" may be used herein to readily describe the relationship between one element or component and another element (or component) or component (or component) as shown in the figure. In addition to the orientations shown in the figure, spatial relation terms will encompass various different orientations of the device in use or operation. The device may be positioned in other ways (rotated 90 degrees or in other orientations) and will be interpreted accordingly through the spatial relation descriptors used herein.

[0048] Furthermore, the technical parts described in this utility model and the appended claims are mainly the improved technical parts of this utility model, and do not limit the object protected by this utility model to only having these technical parts. Other known necessary components (structures and / or methods) and / or non-essential components of the protected object, other than the technical parts described in this utility model and the appended claims, are not included in this utility model and the appended claims because they do not involve the improvement scope of this utility model. However, this does not mean that the object protected by this utility model does not possess these known components.

[0049] Please see Figures 1 to 3 , Figures 1 to 3 A schematic diagram of one embodiment of the grounding structure 100 of this utility model is shown. In the illustrated embodiment, the grounding structure 100 is used to connect to a grounding object, which refers to any component or structure that needs to be grounded through the grounding structure 100. For example, in this embodiment, the grounding object is the grounding terminal of an electrical connector, and the grounding terminal is connected to ground through the grounding structure 100 to improve the crosstalk immunity of the electrical connector.

[0050] The grounding structure 100 includes a grounding plate 110. The grounding plate 110 has a first side surface 111 and a second side surface 112, the first side surface 111 and the second side surface 112 being two opposite sides of the grounding plate 110, and the first side surface 111 and the second side surface 112 being two sides in the thickness direction of the grounding plate 110. Figure 1 In the shown orientation, the first side 111 of the grounding plate 110 faces downwards, and the second side 112 faces upwards. Those skilled in the art will understand that the first side 111 and the second side 112 can be two non-opposing sides, depending on different application requirements.

[0051] The grounding plate 110 has a corresponding number of first holes 113 at corresponding positions according to the number and location of the grounding objects. The first hole 113 penetrates one side of the grounding plate 110 facing the grounding object (referred to herein as the second side 112), and also penetrates the first side 111 of the grounding plate 110 to form a first through hole 113a. In this embodiment, the first through hole 113a penetrates the first side 111 and the second side 112 along the thickness direction of the grounding plate 110. The advantage of designing the first hole 113 as a first through hole 113a is that it facilitates processing, reduces material usage and weight, and also facilitates the configuration of the conductive post 120 described below. Those skilled in the art will understand that the first hole 113 can also be designed as a blind hole according to different needs, with the closed end of the blind hole close to the first side 111 of the grounding plate 110 and the open end penetrating the second side 112 of the grounding plate 110. To facilitate the assembly and positioning of the grounding plate 110 with other components, the grounding plate 110 is also provided with positioning parts, such as the two (not limited to two) positioning holes 114 shown in the figure.

[0052] In the illustrated embodiment, eleven grounding objects (or other numbers, such as one or more) are used as an example. The eleven grounding objects are spaced apart along a first direction, such as the length direction or longitudinal direction shown in the figure; for ease of description, the first direction is represented by the X-axis below. Each grounding object is distributed along a second direction (i.e., the central axis or length direction of each grounding object is distributed along the second direction), such as the width direction or transverse direction shown in the figure; for ease of description, the second direction is represented by the Y-axis below. All eleven grounding objects can be flat or approximately flat block, strip, or bar structures. Approximately flat can mean that the overall inclination of the grounding object is very small, or that the upper and lower sides of the grounding object are approximately planar or have only small steps. Each of the eleven grounding objects is not completely straight; they have a certain degree of bending or curvature (bending or curvature in the horizontal direction), that is, the central axis of each grounding object is not straight, but rather a corresponding broken line or curve. It should be understood that the shape of the grounding objects is not limited to the above, depending on different needs. For example, in some embodiments, each grounding object may have a different shape. Alternatively, at least one grounding object may have a shape different from the others. Another example is that at least one or all of the grounding objects may be in a horizontal Z-shape, S-shape, L-shape, or similar shape. Yet another example is that at least one or all of the grounding objects may be in a vertical Z-shape, S-shape, L-shape, or similar shape.

[0053] Based on the aforementioned eleven grounding objects, eleven sets of first through holes 113a (or first holes 113) are provided on the grounding plate 110 along the X-axis direction. Each set of first through holes 113a includes four first through holes 113a, which are spaced apart along the central axis direction (Y-axis direction) of the corresponding grounding object. This design allows each grounding object to achieve multi-point connection with the conductive posts 120 located in the four first through holes 113a, ensuring the connectivity between each grounding object and the grounding plate 110. Even if one or more conductive posts 120 lose their connection with the grounding object, the connectivity between the grounding terminal and the grounding plate 110 will not be affected. Those skilled in the art will understand that the configuration of the first holes 113 is not limited to the above method. For example, at least one set of first holes 113 can include multiple first holes 113, which are distributed (e.g., spaced apart) along the length direction of the grounding object and are all aligned with the grounding object, so that the conductive posts 120 in each first hole 113 can connect to the grounding object.

[0054] Please continue reading Figures 1 to 3 The grounding structure 100 further includes the conductive post 120, with a first end connected to the first hole 113 and a second end connected to the grounding object. Those skilled in the art will understand that the connection of the conductive post 120 mentioned herein refers to a conductive connection. Depending on different requirements, the conductive post 120 can be tightly fitted with the first hole 113, or contact or abut against the grounding object to achieve a conductive connection. The conductive post 120 can also be rigidly connected to the first hole 113 and / or the grounding object (e.g., adhesive bonding as described below) to achieve a conductive connection.

[0055] The number of conductive posts 120 can be adapted to the number of the first holes 113, for example, the same as the number of the first holes 113. Depending on different requirements, the first end of the conductive post 120 is inserted into the first hole 113, and the second end communicates with the outside through the opening of the first hole 113 or extends out of the first hole 113 or is flush with the second side 112 of the grounding plate 110.

[0056] The first end face of the conductive post 120 is flush with the first side surface 111 of the grounding plate 110 away from the grounding object. Alternatively, the first end face of the conductive post 120 can be recessed into the first through hole 113a (i.e., the first end face of the conductive post 120 is recessed into the first side surface 111 of the grounding plate 110), forming a first gap J1 between the first end face and the horizontal plane where the first side surface 111 is located (the solution adopted in this embodiment). This allows for a certain amount of space in the first through hole 113a, solving the problem that the conductive post 120 easily protrudes from the first side surface 111 of the grounding plate 110 due to manufacturing tolerances, etc. When the conductive post 120 protrudes from the first side surface 111, it affects the fit between the grounding plate 110 and other components. For example, in an embodiment where multiple grounding plates 110 are stacked, if the first end face of the conductive post 120 is designed to be flush with the grounding plate 110, and if the first end face of the conductive post 120 protrudes beyond the first side surface 111 of the grounding plate 110 due to manufacturing tolerances, then the portion of the conductive post 120 protruding beyond the first side surface 111 of the grounding plate 110 needs to be removed, increasing manufacturing complexity. If the first end face of the conductive post 120 is allowed to protrude beyond the first side surface 111 of the grounding plate 110, it will result in poor adhesion between adjacent grounding plates 110.

[0057] The conductive post 120 is configured as a conductive adhesive post 120a, which can be formed by injecting conductive adhesive into the first through hole 113a, or by injecting conductive plastic into the first through hole 113a through injection molding. The conductive post 120 can also be formed first and then assembled into the first hole 113. In this embodiment, the conductive adhesive is formed by conductive adhesive injection. After the conductive adhesive cures, the conductive adhesive post 120a is formed, with its outer peripheral surface bonded to the inner peripheral surface of the first hole 113. The second end of the conductive adhesive post 120a extends out of the first hole 113 and is bonded to the grounded object. This conductive adhesive injection molding method can improve efficiency and simplify the process. The conductive adhesive can include resin and conductive fillers, such as epoxy resin, acrylic silicone, etc., and conductive fillers such as gold powder, silver powder, copper powder, graphite, etc., thereby forming a conductive adhesive post 120a with gold, silver, copper, and / or graphite conductive materials. In this embodiment, the conductive adhesive post 120a is a pure silver conductive epoxy adhesive post.

[0058] Please continue reading Figure 2The grounding structure 100 further includes claws 130, which are disposed on the grounding plate 110 and are used to improve the bonding force between the grounding plate 110 and other components. For example, the claws 130 are embedded in the conductive adhesive pillars 120a, which improve the bonding force between the grounding plate 110 and the grounding object. The first end of the claw 130 is connected to the grounding plate 110, and the second end of the claw 130 extends towards the grounding object. In this embodiment, claws 130 are provided on both ends of the grounding plate 110, and the number of claws 130 at each edge is one or more, such as the four claws 130 shown in the figure. The claws 130 are integrally bent and formed with the grounding plate 110, and the claws 130 can be formed by stamping through the stamping process.

[0059] As will be understood by those skilled in the art, the location of the claws 130 is not limited to the two end edges of the grounding plate 110. The number, position, and shape of the claws 130 can be adaptively adjusted according to the needs of different embodiments. For example, in one embodiment, claws 130 are provided not only at both end edges of the grounding plate 110, but also at at least one first through hole 113a. In another embodiment, claws 130 are provided at some or all of the first through holes 113a of the grounding plate 110. The claws 130 do not require a separate process; they can be integrally formed when stamping the first through hole 113a, that is, the claws 130 are stamped from the first side 111 of the grounding plate 110 towards the second side 112. Thus, the claws 130 extend towards the grounding object and can penetrate into the conductive post 120.

[0060] Based on the above embodiments, the grounding structure 100 of this utility model has the following beneficial effects: (i) The grounding structure 100 is configured as a grounding plate 110 with a first hole 113, and a conductive post 120 is provided in the first hole 113 to connect the grounding plate 110 and the grounding object, ensuring the conductive connection performance between the grounding plate 110 and the grounding object. (ii) The connection between the grounding plate 110 and the grounding object is realized through the conductive post 120, so that the first side 111 and the second side 112 of the grounding plate 110 are made into a plane, improving the overall strength of the grounding plate 110. Compared with the waveform grounding plate 110 in the prior art, the flat grounding plate 110 in this solution is more convenient to install and cooperate with other components, reduces the space in the height direction, makes the overall structure layout more compact, and can save raw materials, reduce costs, reduce the processing difficulty of the grounding plate 110, and eliminate the need to consider the problem of poor contact between the grounding plate 110 and the grounding object caused by the flatness deviation of the grounding plate 110. (III) Through the cooperative structure of the conductive post 120 and the first hole 113, the grounding structure 100 can be used for grounding objects of more shapes. It is only necessary to set the corresponding first hole 113 and the corresponding number or size of conductive posts 120 according to the distribution direction of the grounding object, thereby improving the applicability and versatility of the grounding structure 100. (IV) The grounding plate 110 is provided with a claw structure, which can further increase the bonding strength between the grounding plate 110 and other components.

[0061] Based on the grounding structure 100 provided above, this utility model also discloses an application of the grounding structure 100, specifically an electrical connector. The electrical connector can be any known electrical connector in the prior art; that is, other structures of the electrical connector besides the grounding structure 100 can adopt or draw upon other structures of electrical connectors in the prior art. For example, in an exemplary electrical connector, it includes a first lead frame 200, a first terminal assembly 300, and a first grounding structure 100' (see...). Figure 5 It should be noted that the term "first" here is used to distinguish it from the "second" contained in the electrical connector shown in another example below. In fact, the term "first" can also be omitted, meaning that the electrical connector includes a lead frame, a terminal assembly, and a grounding structure 100.

[0062] Please see Figure 4 and Figure 5The first lead frame 200 has a first side 201 and a second side 202. The first side 201 faces the same direction as the first side 111 of the grounding piece 110, and the second side 202 faces the same direction as the second side 112 of the grounding piece 110. The first lead frame 200 serves as a carrier for the terminal assembly, supporting and fixing the terminal assembly. The first lead frame 200 can be integrally injection molded with the terminal assembly, or it can be molded first and then inserted into the terminal assembly. The first lead frame 200 can be an insulator or an injection-molded part; therefore, the first lead frame 200 can also be referred to as an insulating body or a plastic part.

[0063] The first terminal assembly 300 has a signal terminal 30a and a ground terminal 30b, both of which are disposed on the second side 202 (the side opposite to the grounding piece 110) of the first lead frame 200. The first grounding structure 100' is disposed on the first side 201 (the side opposite to the first terminal assembly 300) of the first lead frame 200. In this embodiment, a subtle detail is that the first lead frame 200 is provided with a second hole 203 directly opposite the first hole 113. To facilitate the connection between the conductive post 120 and the grounding terminal 30b located on the second side surface 202 of the first lead frame 200, the second hole 203 is a through hole (hereinafter referred to as the second through hole 203a). The end of the second through hole 203a facing the grounding plate 110 communicates with the first through hole 113a. The end of the second through hole 203a away from the grounding plate 110 (the end facing the grounding terminal 30b) and the grounding terminal 30b form a blind hole structure or a groove structure (the grounding terminal 30b covers the end of the second through hole 203a away from the first through hole 113a). The conductive post 120 passes through the second through hole 203a and the first through hole 113a to connect with the grounding plate 110, and the conductive post 120 (second end face) is connected to the grounding terminal 30b, which is the object to be grounded.

[0064] Please continue reading Figure 4 , Figure 5 and Figure 6 As an example, the electrical connector includes a first component A (upper row component) and a second component B (lower row component), which may have the same structure and be arranged as mirror images of each other (with the orientation in the figure as a reference, and the Z-axis direction representing the up and down direction). The electrical connector also includes a main carrier 400 (or frame) that combines or constrains the first component A and the second component B to form an integral whole. After they are combined, the first component A and the second component B are located on two opposite sides of the main carrier 400.

[0065] The first component A includes a first lead frame 200, a first terminal assembly 300, and a first grounding structure 100'. The second component B includes a second lead frame 200', a second terminal assembly 300', and a second grounding structure 100' with the same structure or function. The first terminal assembly 300 is disposed on the second side 202 (upper side) of the first lead frame 200, and the first grounding structure 100' is disposed on the first side 201 (lower side) of the first lead frame 200. The second component B is a mirror image of the first component A; therefore, the second terminal assembly 300' is disposed on the second side 202 (lower side) of the second lead frame 200', and the second grounding structure 100' is disposed on the first side 201 (upper side) of the second lead frame 200'. For details on the first grounding structure 100' and the second grounding structure 100', please refer to the description of the grounding structure 100 above.

[0066] Based on the above structure, the first terminal assembly 300, the first lead frame 200, the first grounding structure 100', the second grounding structure 100" and the second lead frame 200' and the second terminal assembly 300' are distributed sequentially from top to bottom. The grounding plates 110 of the first grounding structure 100' and the second grounding structure 100" can be attached together. Based on the above-mentioned matching relationship between the conductive post 120 and the first hole 113 (the first end face of the conductive post 120 is recessed into the first through hole 113a), a second gap J2 (the sum of the two first gaps J1) is formed between the first end face (lower end face) of the conductive post 120 of the first grounding structure 100' and the first end face (upper end face) of the conductive post 120 of the second grounding structure 100". Of course, the conductive post 120 of the first grounding structure 100' and the conductive post 120 of the second grounding structure 100" can be completely connected, further improving the conductive connection performance.

[0067] Since the first component A and the second component B have the same structural design, the following detailed explanation will focus on the first component A.

[0068] The first terminal assembly 300 includes signal terminals 30a and ground terminals 30b (signal terminals 30a and ground terminals 30b are collectively referred to as terminals). Multiple signal terminals 30a and ground terminals 30b can be configured, and these terminals are arranged at intervals along the X-axis direction, with a third gap J3 between each pair of adjacent terminals. The length direction (central axis direction) of each signal terminal 30a and ground terminal 30b is distributed along the Y-axis direction. Therefore, the Y-axis direction can be used as the insertion direction of the electrical connector and its first terminal assembly 300. The end that inserts into the mating electrical connector can be called the front end (the end in the Y-axis direction), and the other end can be called the rear end (the other end in the Y-axis direction).

[0069] The signal terminals 30a are arranged in pairs, with a ground terminal 30b on each side of each signal pair. In the first terminal assembly 300 arranged along the entire X-axis, the terminals on both sides are ground terminals 30b. If S represents the signal terminal 30a and G represents the ground terminal 30b, then the first terminal assembly 300 can be arranged in GSS. Of course, the arrangement of the signal terminals 30a and ground terminals 30b is not limited to this; for example, they can also be arranged in SGS, SSG, etc.

[0070] Please see Figure 7 The shapes of the signal terminal 30a and the ground terminal 30b can be varied according to their positions in the X-axis arrangement direction to adapt to the needs of different embodiments. For example, in this embodiment, in the X-axis direction, the intermediate signal terminal 30a and / or intermediate ground terminal 30b (collectively referred to as intermediate terminal 310) located in the middle region are in a straight "I" shape. The signal terminal 30a and / or ground terminal 30b located on the first side of the intermediate terminal 310 (collectively referred to as first side terminal 320) have the following structure: the first side terminal 320 has a first straight section 301 distributed along the Y-axis direction, an inclined section 302 that extends forward from one end of the first straight section 301 and is inclined toward the intermediate terminal 310, and a second straight section 303 that extends straight forward from the inclined section 302 along the Y-axis direction. The signal terminal 30a and / or ground terminal 30b (collectively referred to as the second side terminal 330) located on the second side of the intermediate terminal 310 are arranged symmetrically with respect to the intermediate terminal 310 and the first side terminal 320. That is, the second side terminal 330 also has a first straight section 301 distributed along the Y-axis direction, an inclined section 302 that slopes forward from the first straight section 301 and toward the intermediate terminal 310, and a second straight section 303 that extends straight forward from the inclined section 302.

[0071] Please see Figure 8To facilitate direct connection of each grounding terminal 30b to the grounding plate 110 of the first grounding structure 100' to achieve an electrical path, the front end of the grounding terminal 30b (the end away from the first straight section 301) is bent towards the grounding plate 110 (shown downwards in the figure) to form a bent section 304. The junction of the bent section 304 and the front end of the terminal forms a first bent portion 3041. The side (lower side) of the bent section 304 facing the grounding plate 110 can be directly welded to the second side 112 of the grounding plate 110. Alternatively, the bending section 304 may extend forward (away from the first straight section 301) to form a connecting section 305. The junction of the connecting section 305 and the bending section 304 forms a second bending portion 3042. The side of the connecting section 305 facing the grounding piece 110 is welded to the second side 112 of the grounding piece 110. This increases the welding area and improves the connection stability.

[0072] Please see Figure 9 The first lead frame 200 has side ribs 210 on both sides facing the X-axis, and a middle rib 220 is formed on the second side 202 of the first lead frame 200 facing the terminal, directly opposite the third gap. Both the side ribs 210 and the middle rib 220 protrude from the second side 202 of the first lead frame 200, and receiving grooves 230 are formed between each side rib 210 and the adjacent middle rib 220, and between two adjacent middle ribs 220, for the corresponding terminal to be accommodated. The receiving grooves 230 are through grooves distributed along the length of the terminal. When the terminal is accommodated in the receiving groove 230, the terminal is exposed on the second side 202 of the first lead frame 200. Depending on the type of terminal it accommodates, the receiving groove 230 can be called a signal receiving groove 230a or a ground receiving groove 230b. The signal receiving groove 230a is used to accommodate a signal terminal 30a, and the ground receiving groove 230b is used to accommodate a ground terminal 30b.

[0073] Please see Figure 10 and Figure 10aCorresponding to the bending section 304 and the connecting section 305, the front end face shape of the grounding receiving groove 230 is contoured to the corresponding side faces of the first bending portion 3041, the bending section 304, and the second bending portion 3042. That is, the front end of the grounding receiving groove 230 has a first contoured surface 231 that matches the shape of the adjacent surface of the first bending portion 3041, a second contoured surface 232 that matches the adjacent surface of the bending section 304 (the side in contact with the grounding receiving groove 230), and a third contoured surface 233 that matches the shape of the adjacent surface of the second bending portion 3042. The first contoured surface 231 is a convex contoured surface, and the third contoured surface 233 is a concave contoured surface. Both the first bending portion 3041 and the second bending portion 3042 have rounded corners, therefore the first contoured surface 231 is a convex curved surface, and the second contoured surface 232 is a concave curved surface. The second contoured surface 232 gradually curves downward and forward, forming a sharp angle 234 between it and the first side surface 201 of the first lead frame 200 (the side surface facing the grounding plate 110). When the first side surface 201 of the first lead frame 200 is placed on the second side surface 112 of the grounding plate 110, the tip of the sharp angle 234 smoothly transitions with the second side surface 112 of the grounding plate 110. This allows the grounding terminal 30b to fit seamlessly with the second side surface 202 of the first lead frame 200 and the second side surface 112 of the grounding plate 110, improving the bonding stability and terminal stability.

[0074] Please see Figure 9 and Figure 11 The second side 202 of the first lead frame 200 has a positioning protrusion 240 distributed along the X-axis direction, the positioning protrusion 240 spanning the side protrusion 210 and the intermediate protrusion 220. The first side 201 of the first lead frame 200 has a recess 250 for accommodating and positioning the grounding piece 110, the recess 250 being recessed from the first side 201 of the first lead frame 200 toward the second side 202, the shape of the recess 250 being adapted to the grounding piece 110. In the illustrated embodiment, a stop 260 is formed at the rear end edge of the first lead frame 200 (on the same side as the first straight section 301), the stop 260 being distributed along the X-axis direction at the rear end edge of the first lead frame 200. The stop 260 can be in the form of a block or strip. The stop 260 causes the first side 201 of the first lead frame 200 to form an L-shape, which has a lower low surface and a higher high surface. The low surface area serves as the recessed position 250. The side surface of the stop 260 facing the low surface forms a limit on the grounding piece 110 of the first grounding structure 100'.

[0075] The first side surface 201 of the first lead frame 200 is also provided with a positioning structure. The positioning structure can be positioned during assembly with the grounding piece 110 of the first grounding structure 100', and can also be installed and positioned during assembly with the second component B. The positioning structure may be, for example, a positioning post 271 and / or a positioning hole 272 provided on the first side surface 201 of the first lead frame 200.

[0076] Please see Figure 12 To increase the bonding force between the first lead frame 200, the first terminal assembly 300, and the first grounding structure 100' and the main carrier 400, the front ends (the ends away from the first straight section 301) of the grounding plate 110, the signal terminal 30a, and the grounding terminal 30b all extend outward from the front side of the first lead frame 200 along the Y-axis direction. The front end face of the grounding terminal 30b is flush with the front end face of the grounding plate 110, and the front end of the signal terminal 30a is positioned slightly rearward. The grounding plate 110, the signal terminal 30a, and the grounding terminal 30b all extend outward from corresponding lead frames along the Y-axis direction, and the extended end of the grounding terminal 30b is welded to the grounding plate 110. An embedding space S1 is formed between the signal terminal 30a and the grounding plate 110, and the main carrier 400 is also embedded within this embedding space S1 for bonding.

[0077] In this embodiment, the dimension of the first grounding structure 100' (grounding piece 110) in the X-axis direction can be smaller than the dimension of the first lead frame 200 in the X-axis direction. With this configuration, when the first component A and the second component B are combined, the two end edges of the first grounding structure 100' and the second grounding structure 100" in the X-axis direction can be recessed between the first lead frame 200 and the second lead frame 200'. That is, the first side 201 of the first lead frame 200, the edges of the first grounding structure 100' and the second grounding structure 100" and the first side 201 of the second lead frame 200' form a recessed space S2, which can provide multiple bonding surfaces for bonding with the main carrier 400 to improve bonding strength. The main carrier 400 (the fifth covering portion described below) can be embedded in this recessed space S2 to bond with it. Furthermore, the grounding piece 110 can be configured to be smaller than the size of its respective lead frame, which can reduce the manufacturing cost of the grounding piece 110 while still satisfying the connection requirements of all grounding terminals 30b. Furthermore, the claws 130 bent at both ends of the grounding plate 110 have a certain size and protrude outward from the end faces of both ends of the grounding plate 110 along the X-axis direction, forming multiple concave and convex contact surfaces S21. The multiple concave and convex contact surfaces S21 form a natural concave and convex structure, which further increases the contact surface with the main carrier 400 and further improves the contact force.

[0078] Please see Figure 4 , Figure 5 and Figure 13 The main carrier 400 is used to combine the first component A and the second component B into a whole. The main carrier 400 can be combined with the first component A and the second component B by injection molding, or it can be pre-molded and then assembled with the first component A and the second component B into a whole.

[0079] The main carrier 400 can be an insulator or an injection-molded part. The main carrier 400 can shield the portions of the first grounding structure 100' and the second grounding structure 100" exposed outside their respective lead frames. The main carrier 400 is also used to bind the first component A and the second component B together, and to allow at least partial exposure of each terminal. The main carrier 400 has a first opening 401 extending rearward along the Y-axis, and a second opening 402 allowing partial exposure of the second side surfaces (opposite sides) of the first component A and the second component B.

[0080] In this embodiment, the main carrier 400 has a first covering portion 410 covering the second side of the first component A (the side facing away from the second component B) along the X-axis direction, a second covering portion 420 covering the second side of the second component B (the side facing away from the first component A), a third covering portion 430 and a fourth covering portion 440 covering the end faces of the first component A and the second component B respectively, and a fifth covering portion 450 covering the front end of the first component A and the second component B (the end where the grounding terminal 30b is welded to the grounding piece 110).

[0081] In the Y-axis direction, the dimensions of the first covering portion 410 and the second covering portion 420 are smaller than the dimensions of the first component A and the second component B, and the first covering portion 410 and the second covering portion 420 are located in the middle section in the Y-axis direction, such that the first component A and the second component B are separated by the first covering portion 410 and the second covering portion 420 into a mating portion located on its front side and a mounting portion located on its rear side. Based on this, the electrical connector, according to its position and function, includes a mating portion located on the front side of the first covering portion 410 and a mounting portion located on the rear side of the second covering portion 420. The mating portion is used for complementary mating with the mating electrical connector, and the mounting portion can be connected to a board end to form a board-end connector, or it can be connected to a wire end to form a wire-end connector.

[0082] In this embodiment, the position of the first covering portion 410 corresponds to the positioning protrusion 240 of the second side surface 202 of the first lead frame 200, and the position of the second covering portion 420 corresponds to the positioning protrusion 240 of the second side surface 202 of the second lead frame 200'. Both the first covering portion 410 and the second covering portion 420 are provided with mating grooves 421, which engage with the positioning protrusions 240 to increase the mating area.

[0083] In this embodiment, since each terminal protrudes from the second side 202 of the corresponding lead frame, a clearance groove 422 is also formed at the position of each terminal on the first covering part 410 and the second covering part 420.

[0084] The third covering portion 430 and the fourth covering portion 440 have the same or similar structure or function, and both have shielding portions 431 and 441 that extend into the concave space S2 to shield the first grounding structure 100' and the second grounding structure 100". The shielding portions 431 and 441 of the third covering portion 430 and the fourth covering portion 440 cover the two ends of the two grounding plates 110 and enclose the claws 130 at the two ends of the two grounding plates 110. Since the claws 130 protrude outward from the two ends of the grounding plates 110, multiple concave portions are formed. The convex mating surface S21 engages with the corresponding third covering portion 430 and fourth covering portion 440, increasing the bonding force between them. The third covering portion 430 and fourth covering portion 440 also have connecting portions 432 and 442 connected to the rear side of the shielding portions 431 and 441. The connecting portions 432 and 442 are connected to both the first covering portion 410 and the second covering portion 420. The connecting portions 432 and 442, together with the first covering portion 410 and the second covering portion 420, form a covering frame that covers the outer periphery of the second component along the X-axis direction of the first component.

[0085] The fifth covering portion 450 has a guide portion 45a, each side of which is inclined forward and towards the center to form a beveled guide surface, which improves the ease of mating with the mating electrical connector. The fifth covering portion 450 has a groove 453 for embedding a grounding piece 110, the groove 453 dividing the fifth covering portion 450 into a first portion 451 and a second portion 452 arranged side by side along the Z-axis. The first portion 451 and the second portion 452 extend rearward into the embedding space S1 of the first component A and the second component B, respectively, and the rear sides of the first portion 451 and the second portion 452 are tightly fitted with the first lead frame 200 and the second lead frame 200', respectively. Signal covering grooves 451a and 452a are provided on the second side of the first portion 451 and the second side of the second portion 452 at positions corresponding to the front end portion of the signal terminal 30a (the portion extending out of the front end face of its respective lead frame). The front end portion of the signal terminal 30a is placed in the signal covering grooves 451a and 452a, with its second side exposed. Grounding covering grooves 451b and 452b are provided on the second side of the first portion 451 and the second side of the second portion 452 at positions corresponding to the ground terminal 30b. The grounding covering grooves 451b and 452b communicate with the groove 453 along the height direction, and the grounding covering grooves 451b and 452b conform to the front end portion of the ground terminal 30b (bending section 304 and connecting section 305).

[0086] Based on the above embodiments, the electrical connector of this utility model can be manufactured in the following manner:

[0087] Manufacturing of Component A: (a) The signal terminal 30a and the ground terminal 30b are placed into an injection mold, and the signal terminal 30a, the ground terminal 30b and the first lead frame 200 are integrally injection molded. During the injection molding process, the injection mold has pressure pillars that hold the signal terminal 30a and the ground terminal 30b to prevent them from being misaligned. Therefore, the first lead frame 200 after molding has pressure holes 204 at the positions corresponding to the signal terminal 30a and the ground terminal 30b. Among them, the pressure hole 204 on the first lead frame 200 corresponding to the ground terminal 30b is the second through hole 203a mentioned above. In this way, the problem of ground terminal 30b misalignment is solved and the function of the second through hole 203a is realized, avoiding secondary drilling and reducing the complexity of the manufacturing process. (ii) Place the grounding piece 110 on the first side 201 of the first lead frame 200 and align the first through hole 113a of the grounding piece 110 with the second through hole 203a on the first lead frame 200. In this step, the positions of the claws 130 at both ends of the grounding piece 110 are aligned with the second through holes 203a at both ends of the first lead frame 200, so that each claw 130 extends into the corresponding second through hole 203a. Inject conductive adhesive into each first through hole 113a and the aligned second through hole 203a. After the conductive adhesive cures, it forms a conductive adhesive column 120a. The conductive adhesive column 120a not only achieves the function of conducting electricity, but also adheres to the grounding piece 110, the first lead frame 200 and the grounding terminal 30b, further increasing the bonding force between them.

[0088] (ii) Manufacturing of the second component B: The second component B is manufactured in the same manner as the first component A.

[0089] (III) Component assembly: The first component A and the second component B are placed in the injection mold, and the grounding plates of the first component A and the second component B are stacked together and injection molded to obtain the main carrier 400 that holds the first component and the second component together.

[0090] In summary, the electrical connector of this utility model has the following beneficial effects: (I) Improved anti-crosstalk performance: Each grounding terminal 30b is connected to the grounding piece 110 through the conductive post 120, which solves the problem of unstable contact caused by the waveform grounding piece 110 due to manufacturing and its own elasticity in the prior art, improves the connection performance between the grounding terminal 30b and the grounding piece 110, and allows noise signals to return quickly through the ground, thereby improving the anti-crosstalk performance of the electrical connector. (II) Optimized and reduced manufacturing process complexity: The grounding piece 110 only needs to be made into a conventional sheet structure. An opening process is added during its manufacturing process, which simplifies the manufacturing process and eliminates the need to consider the tolerance of the waveform grounding piece 110. (III) The second through hole 203a at the first lead frame 200 and the second lead frame 200' is the pressing hole position 204 in the injection molding process. This solves the terminal misalignment problem in the injection molding process and realizes the function of the second through hole 203a. It eliminates the need to add two separate opening processes, simplifies the manufacturing process, and solves the terminal misalignment problem. (iv) The claw structure at both ends of the grounding piece 110 can enhance the bonding force between the grounding piece 110, the lead frame and the terminal, and can also form multiple concave and convex bonding surfaces S21 at the edges of both ends of the grounding piece 110, enhance the bonding force between the first component A and the second component B and the main carrier 400, improve the connection strength and stability of the electrical connector, and improve the service life of the electrical connector.

[0091] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A grounding structure, characterized in that, include: A grounding plate has a first side and a second side, and a first hole is provided on the grounding plate, the first hole passing through the second side of the grounding plate; as well as A conductive post, with its first end connected to the first hole and its second end used to connect to a grounded object.

2. The grounding structure as described in claim 1, characterized in that: The first hole also penetrates the first side of the grounding plate to form a first through hole; The first side and the second side are opposite to each other.

3. The grounding structure as described in claim 1, characterized in that: The grounding objects are a plurality of each other; the grounding plate is provided with a plurality of first holes adapted to the grounding objects; among the plurality of first holes, at least one group of first holes includes a plurality of first holes, the plurality of first holes are distributed along the length direction of the grounding object and are all aligned with the grounding object, so that the conductive post in each first hole can be connected to the grounding object.

4. The grounding structure as described in claim 1, characterized in that: The conductive post is configured as a conductive adhesive post, the outer peripheral surface of the conductive adhesive post is bonded to the inner peripheral surface of the first hole, and the second end of the conductive adhesive post extends out of the first hole and is bonded to the grounding object.

5. The grounding structure as described in claim 4, characterized in that: The conductive adhesive column is configured as a conductive adhesive column having gold, silver, copper and / or graphite conductive materials.

6. The grounding structure as described in claim 2, characterized in that: The first end face of the conductive post is recessed into the first through hole; or, the first end face of the conductive post is flush with the first side of the grounding plate away from the grounding object.

7. The grounding structure as described in claim 1, characterized in that: The grounding plate is provided with claws; claws are provided on both ends of the grounding plate; the first end of the claw is connected to the grounding plate, and the second end extends toward the grounding object.

8. The grounding structure as described in claim 2, characterized in that: The grounding plate is provided with claws at positions corresponding to at least one of the first through holes. The claws are integrally stamped when the first through holes are stamped. The claws are stamped from the first side of the grounding plate to the second side. The claws extend toward the grounding object and can extend into the conductive post.

9. An electrical connector, characterized in that: Includes the grounding structure as described in any one of claims 1 to 8.

10. An electrical connector, characterized in that, include: The first lead frame has a first side and a second side; A first terminal assembly includes a signal terminal and a ground terminal, both of which are disposed on a second side of the first lead frame; and A first grounding structure, configured as the grounding structure of any one of claims 1 to 8, wherein the first grounding structure is located on a first side of the first lead frame; The first lead frame is provided with a second hole that is directly opposite to the first hole of the first grounding structure. The second hole is connected to the grounding terminal. The conductive post is connected to the first hole and the second hole. The conductive post is also connected to the grounding terminal, which is the grounding object, through the second hole.

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